The line has hump-backed stations which allow trains to store gravitational potential energy as they arrive and to then use this energy as they leave the stations. The stations are on top of small hills, or humps. As the train travels up the hill to the station its weight helps it to slow down. As the train leaves the station it travels down the hill, with gravity helping the train to speed up. This saves 5% energy and makes the trains run 9% faster.[4] Each new platform built for the Victoria Line is 132.6 metres long.[5] 183 million people use the Victoria line each year.[5]

Each Victoria line station apart from Pimlico was built as an interchange station and several existing stations were re–arranged to allow for cross-platform interchange with it. In some cases this was achieved by placing the Victoria line platforms on either side of the existing station. In others the Victoria line uses one of the older platforms and the existing line was diverted into a new platform.[6]

Platform humps were installed on all Victoria Line stations, except for Pimlico, during late 2010 and 2011. This was done to provide step-free access to trains.[10] The Rail Vehicle Accessibility (Non Interoperable Rail System) Regulations 2010 and the Disability Discrimination Act 1995 created the need for the humps to be installed.[11][12] The humps are a ramp type, similar to those being installed on some mainline stations. They are of a masonry construction.[13]

The first section opened was between Walthamstow Central and Highbury & Islington. There was no opening ceremony for this. The normal timetable started on 1 September 1968. The first train left Walthamstow Central for Highbury & Islington at about 6.30 am. Later that year, the section between Highbury & Islington and Warren Street was opened. Again there was no ceremony.

The official opening ceremony for the line took place at Victoria station on 7 March 1969. Queen Elizabeth II unveiled a commemorative plaque on the station concourse. After a short ceremony, she bought a 5d (old pence) ticket and travelled to Green Park. In new pence this would be about 2.08p.

When the line first opened it was served by a fleet of 8-car1967 tube stock trains. Each is made up of two four-car units. Later on, a number of cars of 1972 Mark I tube stock were adapted to work with the 1967 stock.[15] This meant that there were finally 43 trains, each of which was made up of two four-car units. The 1967 tube stock was replaced by 2009 tube stock between 2009 and 2011 (see below).

At first, an articulated type of rolling stock was considered. This idea was not used because it would have been to difficult to move the stock to Acton Works for heavy overhauls.[16] This is no longer a problem since train overhauls have been moved away from Acton Works to the builders' own works. The new 2009 tube stock has a wider profile and slightly longer carriage. This prevents it from running on other deep-level tube lines.

The line has an Automatic Train Operation system (ATO). The train operator (driver) closes the train doors and presses a pair of "start" buttons. If the way ahead is clear, the ATO drives the train at a safe speed to the next station and stops there. This system has been in place since the line opened in 1968. This makes the Victoria line the world's first full-scale automatic railway.[17]

When the Victoria line was built, there were severe budget restrictions. As a result, the station infrastructure standards were lower than on older lines and on later extension projects. Examples of these lower standards include narrower than usual platforms and undecorated ceilings at Walthamstow Central, Blackhorse Road and Tottenham Hale. This also affects lighting levels. At most stations between the up and down escalators there is a concrete staircase where an additional escalator could be installed, but has not been fitted. It can cause severe congestion at peak times. This has been remedied at Brixton in 2004 and at Vauxhall in 2006 where an additional escalator has been installed in place of the fixed stairway.[6]

In addition, there have been station closures for safety reasons, when both escalators have been unserviceable. Over many years, heavy equipment has been installed in fenced-off sections at the ends of platforms owing to the lack of anywhere else to install them. It is not clear from Transport for London's Five-Year Investment Programme whether these shortcomings are likely to be remedied.

The 1967 stock was replaced bit by bit from July 2009 as part of Transport for London's 5-year £10 billion redevelopment project.[18] The replacement for the line's 1967 tube stock is the 2009 tube stock built by Bombardier Transportation. The first train was built in 2006. Testing of the new trains began in 2008. The main fleet began to be introduced in 2009 and went into main service in 2010. The last of the 1967 stock trains ran on 30 June 2011, after which the whole service was provided by 2009 stock.[19]

Supporters of Tottenham Hotspur (and the club itself) have campaigned for a surface station to be opened next to Northumberland Park Station, next to the line's depot. This would provide an improvement in transport links, seen as essential if the club's wish to redevelop their ground and increase crowd capacity is to become a reality. The idea was looked into but Network Rail own the necessary land and need it for their own expansion plans.[20]

For many years there have been proposals to extend southwards from Brixton one stop to Herne Hill. This station would be on a large reversing loop with one platform. This would remove a critical capacity restriction by eliminating the need for trains to reverse at Brixton. However, this would be expensive and cannot currently be justified on cost-benefit reasons. Given that the current line is heavily overcrowded, this is the only extension proposal that has any realistic possibility of ever existing. Even so, it would have to be seen to be effective at reducing overcrowding (by enabling trains to run more frequently) rather than adding to overcrowding to have any hope of being built.

Original motif: Abstract pattern in a circle with line colours of Bakerloo, Central and Victoria lines by Hans Unger, present only on the southbound platform as of summer 2008. Second motif from 1984: Snakes and Ladders, present only on the Central platforms as of summer 2008.

The Depot is connected to the Victoria Line by a tunnelled branch line to a junction to the north of Seven Sisters. It was opened with the first stage of the line in 1968.

There is a local campaign for platforms for the Victoria Line to be built at Northumberland Park station.[21] This is supported by the Haringey Council[22] and by Tottenham Hotspur F.C.; the platforms are seen as essential to the club's plans to increase capacity at their White Hart Lane ground.

↑Day, John R. (1969). "XI. The trains". The Story of the Victoria Line. Westminster: London Transport. p. 81. 968/2719 RP/5M.

↑Although the system was tested on the Tube on a smaller scale before that, initially on a short section of the District line; then a larger trial was carried out on the Central line between Woodford and Hainault. See: